import  {CHANGE_INPUT_VALUE,ADD_TODO_ITEM,DELETE_TODO_ITEM} from './actionTypes'

const defaultState={
    inputValue:'',
    list:[1,2]
}

export default (state=defaultState,action)=>{
    if(action.type===CHANGE_INPUT_VALUE){
        const newState = JSON.parse(JSON.stringify(state));
        newState.inputValue=action.value;
        return newState;
    }

    if(action.type===ADD_TODO_ITEM){
        const newState = JSON.parse(JSON.stringify(state));
        newState.list.push(newState.inputValue);
        newState.inputValue='';
        return newState;
    }

    if(action.type===DELETE_TODO_ITEM){
        const newState = JSON.parse(JSON.stringify(state));
        newState.list.splice(action.index,1);
        return newState;
    }
    return state;
}